Recording-emitting assembly for automatic telephone systems



May 22, 1934. M. TCHOUBRITCH 1,960,129

RECORDING EMITTING ASSEMBLY FOR AUTOMATIC TELEPHONE SYSTEMS Filed June 12, 1951 6 Sheets-Sheet 1 Fig.1

May 22, 1934. M. TCHOUBRITCH RECORDING EMITTING ASSEMBLY FOR AUTOMATIC TELEPHONE SYSTEMS I Filed June 12. 1931 6 Sheets-Sheet 2 y 22, 1934- M. TCHOUBRlTCH 9 RECORDING EMITTING ASSEMBLY FOR AUTOMATIC TELEPHONE SYSTEMS Filed June 12. 1951 6 Sheets-Sheet 3 y 1934- M. TCHOUBRITCH 1,960,129

RECORDING EMITTING ASSEMBLY FOR AUTOMATIC TELEPHONE SYSTEMS Filed June 12. 1931 6 Sheets-Sheet 4 4h, fl w @KKW YZ y I M.--TCHQUBRITCH I 1,960,129

' RECORDING EM-IITTIIINQ AIVSSEMBLY FOR AuTomATfc TELEPHONE SYSTEMS Filed June 12. 1951 s Sheets-Sheet 5 I11 ya 17 f1: w flaw/W74 May 22, 1934.

M. TCHOUBRITCH 1,960,129

RECORDING EMITTING ASSEMBLY FOR AUTOMATIC TELEPHONE SYSTEMS Filed June 12. 1951 6 Sheets-Sheet 6 Fig.6

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c b "m a W 1* 5 Q9 Q8 l i l l l Patented May 22, 1934 UNITED STATES RECORDING-EMITTING ASSEMBLY FOR AUTOMATIC TELEPHONE SYSTEMS Michel Tchoubritch, Sucy-en-Brie, France, as-

Signor to Socit Anonyme Francaise (lite:

Socit Nouvelle de Ccnstructions Tlphoniques (Brevets Tchou-Britch-Derval), Paris,

France Application June 12, 1931, Serial No. 543,958 In France June 28, 1930 8 Claims.

The present invention relates to a recording emitting assembly adaptable to automatic telephone systems.

One of the objects ofthe invention is to provide a recording-emitting assembly capable of being applied to automatic telephone or other telemechanical systems.

Other objects will appear in the'course of the detailed description now to be given with reference to the accompanying drawings, in which:

Figs. 1, 2, and 3, united according to the section lines I-I and IIII, as shown in the assemblage view in Fig. 7, disclosed in schematic form, that portion of theapparatus comprising a keyboard for registering the desired number, and the motor of the emitting apparatus;

Fig. 4, 5, and 6, united along the section lines IIIIII and IV-IV, in the manner indicated in the assembly view shown in Fig. 8, disclosed in schematic form, the remainder of the apparatus, comprising the part forming the control commutator, and the verifying apparatus;

Figs. 7 and 8 show respectively the juxtaposition of Figs. 1, 2, and 3 on the, one hand, and Figs. 4., 5, and 6 on the other hand.

On Fig. 3, as well as on Figs. 4 and 5, the corresponding points are indicated by encircled numerals.

This system is composed of the following elements and has been illustrated as applied to an assembly of the 'l-number type (the numerals illustrated insidea circle show where corresponding portions of the system are connected) A keyboard is provided preferably having as many handles as there are numbers and letters to be recorded and emitted. Seven such handles A1, A2, A3, A4, A5, A6 and A7 are shown and are capable of taking up any one of ten positions representing any one of the ten decimal numerals;

A recording assembly of the relay type comprising as many groups .of relays R and R as there are handles on the keyboard (seven in the present case numbered respectively from R1 to R7 and R1 to R7);

An emitting assembly including a motor M driving a cam C;

A verifying commutator including ten relays a, b, c, d, e, f, g, h, i, y and An assembly of control elements composed of relays is, Z, m, n, o, p, q, r, a switch s (Fig. 1) fixed in position and serving to start motor M, and a second switch t (Fig. 3), serving to start a numbering operation.

The motor M may be mounted to drive a num- I ber of keyboards, in which case, a single switch s suflices for the entire assembly.

Each group of relays R and R, is preferably fitted with a tell-tale or verifying lamp 1!. (ul, a2, a3, n4, n5, a6, u'?), the ensemble of these lamps being controlled by two pilot lamps o and .r (Fig. 1) which indicate, respectively, the system as free or busy.

Each one of the contacts coacting with handles A is provided with one of the following numerals1, 2, 3, 4, 5, 6, 7, 8, 9, 0-and also a selected portion of 25 letters of the alphabet (A to Y).

The recording-emitting assembly shown in the drawings being of the 7-number type, the first three letters of the alphabet may be first used to indicate the particular exchange desired. In such a case GOB 38 indicates a number passing through the exchange GOB (Gobelins at Paris).

The entire assembly is arranged so that the impulses sent out by the emitter are verified automatically at the local station at the same time that they are recorded at the distant exchange.

The various structures hereinabove described are connected by means of the circuits shown in the drawings whose function will be set forth in the course of the description of the systems operation now to be given.

Let it be assumed that a connection is desired with Gobelins 60-38.

The operator closes switch 8 (Fig. 1) and manipulates handles A1, A2, A3, A4, A5, A6, A7 so as tooccupy the positions corresponding to letters G, O, B, and numerals 6, 0, 3, 8.

The manoeuvring of each handle excites the corresponding relay R or" the recorder by connecting the positive pole of the battery to one extremity of the relay winding (the other extremity of the winding is connected to the negative pole of the battery) through the intermediary of switches, cables 1 and the contact B, and cables. 3 and 4, the contact B operating at this time (this contact closing as soon as the corresponding handle is manmuvred) The relay R is maintained in auto-excitation by means of its working contact and the cable 2. Contact (B1 to B7) B closes only while the handle is being manoeuvred and opens as soon as the latter assumes its final position.

As soon as relay R enters into action, the telltale lamp of the u series corresponding thereto lights, due to the closure of the circuit between '(Fig. 3) which acts cable 6 and the positive pole of the battery. At the same time, pilot relay 1 is energized due to the closure of the circuit between cable 7 and the positive pole of the battery, said pilot relay 'iunctioning to extinguish lamp 2; indicating free, and energizing lamp as, indicating busy, these latter operations being effected by the closure of circuit 2-9 and the opening of circuit 2-8.

Relay R also acts to break the circuit along cable 10, to close the circuit 16-11, and to break circuit 12-13.

When the seven handles have been positioned as desired, the seven lamps of the u series as well as the lamp .1: are illuminated and the seven relays R2 are working. Cable 14 of each group of relays R and R, is connected to the corresponding verifying relays (a, b, c, d, e, f, g, h, i, 7', Figs. 4, 5 and 6) of the verifying commutator through the intermediary of the contact of the handles and one of the cables of the 15 series (15a, 15b, 15c, 15d, 15c, 15 15g, 15h, 152', 15a).

As soon as the switch 8 is closed, the motor M begins to rotate and drives control cam C. The first closure of circuit 16-17 (through the intermediary of the contacts controlled by cam C) excites relay 10 (Fig. 4) which acts to close circuits 18-19, 20-21, 22-23, and to open circuits 22-24, 25-26 and 27-28.

Cables 19 and 29 correspond to the circuit of the transit exchange and as a consequence, as soon as circuit exchange 18-19 is closed by relay p, the operating elements at the Central are brought into working position. In closing circuit 22-23, control relay p excites relay 0 (Fig. 4), which moves into Working position. GOB -38 is thus completely recorded. To emit the same number, it suffices to close switch t to excite relay q (Fig. 3) through the intermediary of cables 30 and 31, the contact of switch it, and the last relay R which is working.

As soon as relay q enters into action, cable 17 is connected to cable 10 through the intermediary of cable 32 and the contact of retarded relay m which is not operating.

The first closure of circuit 16-17 (Fig. 1) after relay q has begun to work causes excitation of the first relay R, which acts to close circuit 14-4, and so maintains the relay R in action through the intermediary of the verifying relay corresponding to contact G of handle A1. The excitation of relay R also causes the opening of circuit 11-35 and the closure of circuit 6-35, thus permitting said relay to maintain itself in self-excitation through the intermediary of the operating contact of the corresponding relay R. At the same time, relay R functions to open circuit 33-34, cuts the exciting current passing through the winding acting to close relay p Fig. 4), closes circuit 36-37 so as to prepare for commutation of the decimal order, and closes circuit 13-38, thus assuring again the guarding action of relay p after the emission of a series of impulses.

Circuit 16-17 opens after the above described operations and causes relay p to come to rest, thus opening all the working contacts and, simultaneously, closing all the contacts corresponding to rest position. The opening of circuit 18-19 breaks the line circuit. The closure of circuit 25-26 (Fig. 4) excites relay n. The closure of circuit'22-24 insures operation of relay 0. Closure of circuit 37-28 excites relay is which connects the positive p le of t e b tery to cable 39 so as to permit excitation of relay Z which, in its turn, connects the positive pole of the battery. to cable 40 and brings relay m into action so as to open circuit 17-32.

As soon as relay n enters into action, the positive pole of the battery is connected to one of the extremities of the winding of verifying relay 0. (the other extremity of said winding being connected tothe negative pole of the battery) through the intermediary of cables 2, 41, 42, 43, 44, 45, 46 and 47, the working contact of relays m and n, and the rest contacts of relays a, h, f, d, and b.

The excitation of relay 0. opens circuit 2-15a and closes circuit 48-49, circuit 47-50 being closed at the same time so as to maintain said relay in a state of self-excitation.

After the first opening of circuit 16-17, the latter closes again and excites a new impulse relay 3:: which reestablishes all the working contactsand opens all the rest contacts. The closure of circuit 18-19 again closes the line circuit.

The closure of circuit 22-23 insures continued working of relay 1L through the intermediary of circuit 23-51-52 and a working contact of retarded relay n.

The opening of circuit 22-24 brings relay 0 to rest. It is to be noted that during any single series of impulses, retarded relays 7c, Z, m, remain in working position in spite of the opening of circuit 37-28 by relay 1).

At the next opening of circuit 16-17, relay 10 comes to rest, cuts out all the contacts corresponding to operation and closes all the contacts corresponding to rest. This relay acts to again open the line circuit and the circuit exciting relay n, as a consequence of the opening of circuit 22-23. The positive pole of the battery is, at this stage, connected to one extremity of the winding of relay 1) (the other extremity of this winding is connected to the negative pole of the battery) through the intermediary of cables 2, 41, 53, 48 relays m and a in working position and relays nand 0 at rest.

As soon as relay 1) enters into action, it cuts circuit 15-54 and closes circuit 54-49 thus assuring its self-excitation. The same relay opens circuit 46-47, closes circuit 46-55, opens circuit 155-2 and so on until relay d corresponding to contact G of the handles is excited, each verifying relay opening the exciting circuit of the verifying relay just preceding.

When relay d is working, circuit 2-15d is open. The positive pole of the battery is then cut off from the exciting circuit of relay R corresponding to handle A1, which relay, on coming to rest, closes circuit 12-13 and locks impulse relay p while relay R is still working.

On coming to'rest relay R also opens the exciting circuit of relay R in opening the cir-g cuit between the positive pole of the battery and cable 6. .tinguished. In addition, the continuity of cable 10 is again reestablished. It is to be noted that when relay R comes to rest, it reestablishes locking circuit 33-34.

After this first series of impulses, relay p remains in Working position during the time necessary for retarded relays 70, Z and m to come to rest. 7

It is to be noted that for the four openings and closures of circuit 16-17, circuit 18-19 opens four times and the four relays a, b, c and d a e gqllr ecutively excited. Relay d alone Verifying lamp ul is then ex--' continues to workuntil the-excitation of: relay 1 comes to an end. As soon as relay n comes to rest, the system is automatically set into motion for emitting the second numeral or letter, circuit 1'732 closingagain and the closure of circuit l617 causing the excitation of relay R corresponding to handle A2, this latter through the intermediary of the following circuit 7 i Cable 2, circuit l6-l7, circuit 17'32,working contact of relay q;

Cable 10, resting contact of relay R corresponding to handle A1; 7

Cable 10 of relay R corresponding to handle A2, working contact of relay R cable 11 and cable 35 of that relay R corresponding to handle A2.

When relay R enters into action, it closes its working contact in the manner indicated during the description of the operation of the group of relays R and R of handle A1.

The impulses are again emitted and verified in the same manner by the verifying commu-' tator until all seven numerals have been sent out.

When the seventh numeral has been transmitted, relay R corresponding to handle A7 opens circuit 30-31 causing relay 0 to come to rest and liberate the entire group of relays of the R and R series. Relay R corresponding to handle A7 also opens the exciting circuit of relay 1- which comes to rest and lights the lamp indicating free, relays p, 0 begin again to Work and maintain themselves in this position of operation. The entire system is then free and a new number may be recorded and emitted.

When traffic is very intense, motor M may turn without interruption and, in such a case, switch 8 remains closed. It is not necessary to bring all the handles of the A series into any special position after the emission of a number, the latter remaining in the position of the number last emitted until a new number is to be sent out.

What I claim is:

1. A recording transmitter for automatic telephony, comprising in combination a keyboard, an assembly of electromagnetic relays forming a recorder, a chain of metering relays a motor carrying, at the end of its shaft, an eccentric cam, producing a number of current impulses, and circuits for causing the chain of metering relays to meter the number of impulses produced by the cam of the motor during rotation thereof and to stop the action of said impulses each time that the number of metered impulses corresponds to the number of units contained in the numeral previously indicated by any particular key of the keyboard, and for causing the aforementioned key to be placed out of circuit and the next key to be placed in the circuit, in such manner that all the keys are successively eliminated as soon as the recording relay corresponding to each of them has been automatically connected, in turn, to the chain of metering relays.

2. A recording transmitter for automatic telephony, comprising in combination a keyboard, subdivided into as many sections of ten plugs each as the numeral to be expressed comprises decimal digits, a key controlling each of said sections and movable about an axis, and adapted to be placed into contact at will with any selected one of the ten plugs of its section,

an assembly of electromagnetic relays forming a recorder, a chain of metering. relays, a motor carrying, at the end of its shaft, an eccentric cam, producing a number of current impulses, andcirouits for causing the chain of metering relays tometer the number of impulses produced by the cam of the motor during rotation thereof and to stop the action of said impulses each time that the number of metered impulses corresponds to the number of units contained in thenumeral. previously indicated by any par' ticular key of the keyboard, and for causing the aforementioned key to be placed out of circuit and the next key to be placed in the circuit, in such manner that all the keys are successively eliminated as soon asthe recording relay corresponding to each of them has been automatically connected, in turn, to the chain of the metering device.

3. A recording transmitter for automatic telephony, comprising in combination a keyboard, as assembly of electro-magnetic relays forming a recorder, a chain of metering. relays, a motor carrying, at the end of its shaft, an eccentric cam, producing a number of current impulses, and circuits for causing the chain of metering relays to meter the number of impulses produced by the cam of the motor during rotation thereof and to stop the action of said impulses each time that the number of metered impulses corresponds to the number of units contained in the numeral previously indicated by any particular key of the keyboard, and for causing the aforementioned key to be placed out of circuit and the next key to be placed in the circuit, in such manner that all the keys are successively eliminated as soon as the recording relay corresponding to each of them has been automatically connected, in turn, to the chain of metering relays, the recording relays corresponding to the different keys of the keyboard 1715 for operating with the chain of metering relays in such manner as to effect the consecutive actuation of the several keys, with a short period of rest between each actuation.

4. A recording transmitter for automatic 1 telephony, comprising in combination a keyboard, an assembly of electro-magnetic relays forming a recorder, a self-exciting circuit common to said recording relays, a circuit supplying said self-exciting circuit, a chain of metering I relays, a motor carrying, at the end of its shaft, an eccentric cam, producing a number of current impulses, the said chain of metering relays controlling said self-exciting circuit, and circuits for causing the chain of metering relays to meter 1 the number of impulses produced by the cam of the motor during rotation thereof and to stop the action of said impulses each time that the number of metered impulses corresponds to the number of units contained in the numeral 1:,

previously indicated by any particular key of the keyboard, and for causing the aforementioned key to be placed out of circuit and the next key to be placed in the circuit in such manner that the different recording relays are automatically connected to the self-exciting circuit controlled by the chain of metering relays, and all the keys are successively eliminated as soon as the corresponding recording relay has thus been automatically connected. l 5. A recording transmitter for automatic telephony, comprising in combination a keyboard, an assembly of electromagnetic relays forming a recorder, a chain of metering relays a motor carrying, at the end of its shaft, an 1 eccentric cam, producing a number of current impulses, and circuits for causing the chain of metering relays to meter the number of impulses produced by the cam of the motor during rotation thereof and to stop the action of said impulses each time that the number of metered impulses corresponds to the number of units contained in the numeral previously indicated by any particular key of the keyboard, and for causing the aforementioned key to be placed out of circuit and the next key to be placed in the circuit, in such manner that all the keys are successively eliminated as soon as the recording relay corresponding to each of them has been automatically connected, in turn, to the chain of metering relays, the contacts of the keyboard intended for the same number in the different sectors of such keyboard are automatically connected between themselves and are then connected to a rest contact of a control relay corresponding to a number in the chain of metering relays.

6. Apparatus as set forth in claim 1 comprising a motor situated at the manual central, said motor being in continuous operation and producing, during each rotation thereof, a break in the control circuit.

7. Apparatus as set forth in claim 1 comprising an impulse relay for recording the impulses produced by the motor and for simultaneously retransmitting them to two different circuits, one of which corresponds tothe external line of the automatic central which is to be controlled MICHEL TCHOUBRITCH. 

